Transformer

Appearance: It's a huge, dark gray, metallic Tyrannosaurus rex with gold details. In robot mode, it's the largest and most muscular of them all.
Personality: Fierce, proud, dominant, and very stubborn. At first, he refuses to obey Optimus Prime, but after being defeated, he acknowledges him as his leader. He is extremely brave and powerful.
Scorn
Appearance: It transforms into a metallic Spinosaurus with long spines on its back and a very powerful tail.
Personality: Aggressive, fast, and lethal. He is a hunter who attacks without hesitation and usually throws himself headlong into combat.
Slug
Appearance: It transforms into an armored Triceratops with enormous horns and a very tough natural shield.
Personality: Strong, resilient, and determined. He prefers to charge at his enemies rather than use complicated strategies.
Strafe
Appearance: It transforms into a two-headed Pteranodon, with large metallic wings that allow it to fly at high speed.
Personality: Wild, fast, and unpredictable. It attacks from the air and is the most agile of the Dinobots.

Sharp-T
Species: Mini Grimlock (T. rex).
Appearance: Metallic gray, with a large head, sharp teeth, and a short tail. It is the most robust of the three.
Personality: Very gluttonous, curious, and mischievous. He's also the only one who breathes fire, just like Grimlock.
Transformers Wiki +1
Tops
Species: Mini Slug (Triceratops).
Appearance: It has three small horns and a large shield on its head.
Personality: The most impulsive and aggressive. He loves to ram everything he finds, even if it's much smaller than the others.
Transformers Wiki +1
Petery
Species: Mini Strafe.
Appearance: A small pterosaur with metallic wings and two heads, just like Strafe.
Personality: Very playful, restless, and curious. He likes to flit about and get into trouble.

Optimus Prime – Leader of the Autobots. In this film, he is controlled by Quintessa and temporarily becomes Nemesis Prime. Brave, serious, and very protective.
Bumblebee – The second Autobot protagonist. He is loyal, brave, kind, and very close to humans. He plays a key role in restoring Optimus to normal.
Hound – Combat expert. Tough, a joker, and very strong, though he cares about his companions.
Drift – Former Decepticon turned Autobot. He is disciplined, honorable, and a master swordsman.
Crosshairs – Team sniper. Sarcastic, confident, and independent.
Hot Rod – New Autobot in the movie. Charismatic, impulsive, and with the ability to slow down time for a few seconds, he also speaks French and is very chivalrous.